Home / 13,385.66-18,480.88-8,607.75

Finding the Fourth Proportional to 13,385.66, 18,480.88 and 8,607.75

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Solution

The fourth proportional to 13,385.66, 18,480.88 and 8,607.75 is: 11,884.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.66 : 18,480.88 = 8,607.75 : x
  2. Step 2: Convert to fraction form
    13,385.66/18,480.88 = 8,607.75/x
  3. Step 3: Cross multiply
    13,385.66x = 18,480.88 × 8,607.75
  4. Step 4: Simplify right side
    13,385.66x = 159,078,794.82
  5. Step 5: Solve for x
    x = 159,078,794.82/13,385.66
  6. Step 6: Final answer
    x = 11,884.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.